Improvement in refrigerators



I-LGQPLUMB.

REFRIGERATOR.

Patented Apr'1125,1876.

No.17e7a.

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n f UNrrE-D STATES.

HARVEY G. PLUME, or NEW MILEOED, coNNEcriour, Assicnoa oE ONE- PATENT OFFICE.

HALF HIS RIGHT TO ISAAC iB. BRISTOL,'OF SAME PLACE.l

IMPROVEMENT IN Specification forming part of Letters Patent No.' 176,678, dated April 25, i876; application'led January 24, 1876. Y

'[o alllwhom it may concern Be it known that I, HARVEY Gr. PLUMBW, of New Milford, in the county of Litchfield and Stateof Connecticut, have invented a new Improvement in Refrigerators; and ,I do hereby declare the following, when taken in connection with the Vaccompanying drawings and the letters of reference markedv thereon, to be a full, clear, and exact descrip tion of' the same, and which said drawings constitute'part ot' this specification, and represent in` Y Figure 1, front View; Fig. 2, vertical central section. n

rlhis invention relates to animprovement in refrigerators or cooling apparatus, the object being to i'orm a circulation of the air within the cooling-chamber; and it consists in a central ice-chamber, combined with a ehamber at each side, one ot' which is larger than the other, both opening into central icet'hamber; also a passage from one to the other below the icefchani'ber, whereby, in consequence of the said di'erential chambers,

one is cooled more rapidly than the other,

- .thereby forcing the air to iiow from the larger to the smaller above, or through the ice and l'rom the smaller to thelarger below, as more ilully hereinafter described; also, in combining with an ice-chamber an auxiliary coolingchamberbelow.

A represents the outer case, divided internally into compartments B, C, and l), the

compartment B considerably larger than the compartment D, in practice best results being found by making B twice the capacity of D, each extending from top to, bottom. Be-

tween these is vthe compartment C, the oor of which is raised,.and with the sides open, one into the compartment B and the. vother into the compartment D,'so as to allow free circulation of air, the compartments B' and D also connecting` below the ice-compartment 0 by a passage, E.

The case is providedi with adoor,lD/, for the compartment D,`G, for the ice-compartment (l, and B for the larger' compartment ,15. The compartment() is partially filled cool air will iiow from thecompartment B over or through the ice to the compartment D, to follow the cooler air descending in the compartment D. At the same time vthe `air thus cooledin the compartment D vwill iiow through the lower part of the ice-compartment into the lower part of the compartment B, and then the temperature, raised, in consequence of the airin the compartment B being warmer, will return over or through the ice to the compartment D, and thus maintain aconstant circulation from the smaller compartment D to the compartment.

f, and the water from the melting ice is led'- by a tube, a, to or near the bottom of the hol. lowA wall, and an escapespipe, b, leads from the upper part ot' the hollow wall outside 'the case to draw oli thewaste water.

The water, being very cold, will fill the walls of the compartment F, and, to that ext-ent, cool that compartment, as well as the lower part of t-he chambers; but in the use ot' this compartment it is necessary that there should be a passage below it,'from one side chamber to the other, for free circulation.

I do not wish to be understood as broadly claimingan automatic circulation, created in a refrigerating device by means of the icechamber, as such I am aware is not new; but

What I do claim as m'y invention, and de- 'sire to secure by Letters Patent, isl. The differential compartments B D, combined with the intermediate ice-compartment C, with the communication between the compartments B and D below the. compartment U, a'nd also through the compartment C.

, 2.' 1n a refrigerating device, the combina- Y tion of the auxiliary cooling-chamber F, constructed with hollow walls, and with a conductor for the water into said hollow walls from the ice-chamber, and an outlet from said hollow walls, substantially as described.

HARVEYG. PLUMB. Witnesses: l

J oHN S. TUREILL,

ALANSON N. CANFIELD. 

